Made of refractory ceramic, for direct flame casting. High resistance and durability.
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Square crucible made of refractory ceramic. It is suitable for castings with direct flame, torch. It has a high resistance and duration and is used to melt the metals most used in jewelry such as gold, silver and various alloys.
The refractory ceramic crucible must be cured before use with some flux, borax and / or boric acid until they are vitrified. When it is heated for the first time, it must be done progressively to eliminate moisture, in this way it will prevent it from cracking.
Dimensions: 50 x 50 mm